<?php
/*
 *
 * 陈海波   新二级页面 农历转换成公历
 *
 * */
// lunar.php   新建这个php文件，所有的代码无需改，需要改的是下面teacher.php 的几行
class Lunar
{
	private $_SMDay = array(1 => 31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);//定义公历月分天数
	private $_LStart = 1950 ;//农历从1950年开始
	private $_LMDay = array(
			//差：该年的农历正月初一到该年公历1月1日的天数；1~12：农历月份天数；闰：如有闰月，记录该月平月天数
			//  差 1 2 3 4 5 6 7 8 9 10 11 12 闰
			array(47,29,30,30,29,30,30,29,29,30,29,30,29),
			array(36,30,29,30,30,29,30,29,30,29,30,29,30),
			array(6,29,30,29,30,59,29,30,30,29,30,29,30,29),  //五月29 闰五月30
			array(44,29,30,29,29,30,30,29,30,30,29,30,29),
			array(33,30,29,30,29,29,30,29,30,30,29,30,30),
			array(23,29,30,59,29,29,30,29,30,29,30,30,30,29),  //三月29 闰三月30
			array(42,29,30,29,30,29,29,30,29,30,29,30,30),
			array(30,30,29,30,29,30,29,29,59,30,29,30,29,30),  //八月30 闰八月29
			array(48,30,30,30,29,30,29,29,30,29,30,29,30),
			array(38,29,30,30,29,30,29,30,29,30,29,30,29),
			array(27,30,29,30,29,30,59,30,29,30,29,30,29,30),  //六月30 闰六月29
			array(45,30,29,30,29,30,29,30,30,29,30,29,30),
			array(35,29,30,29,29,30,29,30,30,29,30,30,29),
			array(24,30,29,30,58,30,29,30,29,30,30,30,29,29),  //四月29 闰四月29
			array(43,30,29,30,29,29,30,29,30,29,30,30,30),
			array(32,29,30,29,30,29,29,30,29,29,30,30,29),
			array(20,30,30,59,30,29,29,30,29,29,30,30,29,30),  //三月30 闰三月29
			array(39,30,30,29,30,30,29,29,30,29,30,29,30),
			array(29,29,30,29,30,30,29,59,30,29,30,29,30,30),  //七月30 闰七月29
			array(47,29,30,29,30,29,30,30,29,30,29,30,29),
			array(36,30,29,29,30,29,30,30,29,30,30,29,30),
			array(26,29,30,29,29,59,30,29,30,30,30,29,30,30),  //五月30 闰五月29
			array(45,29,30,29,29,30,29,30,29,30,30,29,30),
			array(33,30,29,30,29,29,30,29,29,30,30,29,30),
			array(22,30,30,29,59,29,30,29,29,30,30,29,30,30),  //四月30 闰四月29
			array(41,30,30,29,30,29,29,30,29,29,30,29,30),
			array(30,30,30,29,30,29,30,29,59,29,30,29,30,30),  //八月30 闰八月29
			array(48,30,29,30,30,29,30,29,30,29,30,29,29),
			array(37,30,29,30,30,29,30,30,29,30,29,30,29),
			array(27,30,29,29,30,29,60,29,30,30,29,30,29,30),  //六月30 闰六月30
			array(46,30,29,29,30,29,30,29,30,30,29,30,30),
			array(35,29,30,29,29,30,29,29,30,30,29,30,30),
			array(24,30,29,30,58,30,29,29,30,29,30,30,30,29),  //四月29 闰四月29
			array(43,30,29,30,29,29,30,29,29,30,29,30,30),
			array(32,30,29,30,30,29,29,30,29,29,59,30,30,30),  //十月30 闰十月29
			array(50,29,30,30,29,30,29,30,29,29,30,29,30),
			array(39,29,30,30,29,30,30,29,30,29,30,29,29),
			array(28,30,29,30,29,30,59,30,30,29,30,29,29,30),  //六月30 闰六月29
			array(47,30,29,30,29,30,29,30,30,29,30,30,29),
			array(36,30,29,29,30,29,30,29,30,29,30,30,30),
			array(26,29,30,29,29,59,29,30,29,30,30,30,30,30),  //五月30 闰五月29
			array(45,29,30,29,29,30,29,29,30,29,30,30,30),
			array(34,29,30,30,29,29,30,29,29,30,29,30,30),
			array(22,29,30,59,30,29,30,29,29,30,29,30,29,30),  //三月30 闰三月29
			array(40,30,30,30,29,30,29,30,29,29,30,29,30),
			array(30,29,30,30,29,30,29,30,59,29,30,29,30,30),  //八月30 闰八月29
			array(49,29,30,29,30,30,29,30,29,30,30,29,29),
			array(37,30,29,30,29,30,29,30,30,29,30,30,29),
			array(27,30,29,29,30,58,30,30,29,30,30,29,30,29),  //五月29 闰五月29
			array(46,30,29,29,30,29,29,30,29,30,30,30,29),
			array(35,30,30,29,29,30,29,29,30,29,30,30,29),
			array(23,30,30,29,59,30,29,29,30,29,30,29,30,30),  //四月30 闰四月29
			array(42,30,30,29,30,29,30,29,29,30,29,30,29),
			array(31,30,30,29,30,30,29,30,29,29,30,29,30),
			array(21,29,59,30,30,29,30,29,30,29,30,29,30,30),  //二月30 闰二月29
			array(39,29,30,29,30,29,30,30,29,30,29,30,29),
			array(28,30,29,30,29,30,29,59,30,30,29,30,30,30),  //七月30 闰七月29
			array(48,29,29,30,29,29,30,29,30,30,30,29,30),
			array(37,30,29,29,30,29,29,30,29,30,30,29,30),
			array(25,30,30,29,29,59,29,30,29,30,29,30,30,30),  //五月30 闰五月29
			array(44,30,29,30,29,30,29,29,30,29,30,29,30),
			array(33,30,29,30,30,29,30,29,29,30,29,30,29),
			array(22,30,29,30,59,30,29,30,29,30,29,30,29,30),  //四月30 闰四月29
			array(40,30,29,30,29,30,30,29,30,29,30,29,30),
			array(30,29,30,29,30,29,30,29,30,59,30,29,30,30),  //九月30 闰九月29
			array(49,29,30,29,29,30,29,30,30,30,29,30,29),
			array(38,30,29,30,29,29,30,29,30,30,29,30,30),
			array(27,29,30,29,30,29,59,29,30,29,30,30,30,29),  //六月29 闰六月30
			array(46,29,30,29,30,29,29,30,29,30,29,30,30),
			array(35,30,29,30,29,30,29,29,30,29,29,30,30),
			array(24,29,30,30,59,30,29,29,30,29,30,29,30,30),  //四月30 闰四月29
			array(42,29,30,30,29,30,29,30,29,30,29,30,29),
			array(31,30,29,30,29,30,30,29,30,29,30,29,30),
			array(21,29,59,29,30,30,29,30,30,29,30,29,30,30),  //二月30 闰二月29
			array(40,29,30,29,29,30,29,30,30,29,30,30,29),
			array(28,30,29,30,29,29,59,30,29,30,30,30,29,30),  //六月30 闰六月29
			array(47,30,29,30,29,29,30,29,29,30,30,30,29),
			array(36,30,30,29,30,29,29,30,29,29,30,30,29),
			array(25,30,30,30,29,59,29,30,29,29,30,30,29,30),  //五月30 闰五月29
			array(43,30,30,29,30,29,30,29,30,29,29,30,30),
			array(33,29,30,29,30,30,29,30,29,30,29,30,29),
			array(22,29,30,59,30,29,30,30,29,30,29,30,29,30),  //三月30 闰三月29
			array(41,30,29,29,30,29,30,30,29,30,30,29,30),
			array(30,29,30,29,29,30,29,30,29,30,30,59,30,30),  //十一月30 闰十一月29
			array(49,29,30,29,29,30,29,30,29,30,30,29,30),
			array(38,30,29,30,29,29,30,29,29,30,30,29,30),
			array(27,30,30,29,30,29,59,29,29,30,29,30,30,29),  //六月29 闰六月30
			array(45,30,30,29,30,29,29,30,29,29,30,29,30),
			array(34,30,30,29,30,29,30,29,30,29,29,30,29),
			array(23,30,30,29,30,59,30,29,30,29,30,29,29,30),  //五月30 闰五月29
			array(42,30,29,30,30,29,30,29,30,30,29,30,29),
			array(31,29,30,29,30,29,30,30,29,30,30,29,30),
			array(21,29,59,29,30,29,30,29,30,30,29,30,30,30),  //二月30 闰二月29
			array(40,29,30,29,29,30,29,29,30,30,29,30,30),
			array(29,30,29,30,29,29,30,58,30,29,30,30,30,29),  //七月29 闰七月29
			array(47,30,29,30,29,29,30,29,29,30,29,30,30),
			array(36,30,29,30,29,30,29,30,29,29,30,29,30),
			array(25,30,29,30,30,59,29,30,29,29,30,29,30,29),  //五月29 闰五月30
			array(44,29,30,30,29,30,30,29,30,29,29,30,29),
			array(32,30,29,30,29,30,30,29,30,30,29,30,29),
			array(22,29,30,59,29,30,29,30,30,29,30,30,29,29),  //三月29 闰三月30
	);
	//是否闰年
	private function IsLeapYear($AYear)
	{
		return ($AYear % 4 == 0) && (($AYear % 100 != 0) || ($AYear % 400 == 0));
	}
	//公历该月的天数(year：年份； month：月份)
	private function GetSMon($year,$month)
	{
		if($this->IsLeapYear($year) && $month == 2)
			return 29;
			else
				return $this->_SMDay[$month];
	}
	//农历名称转换
	private function LYearName($year)
	{
		$Name = array("零","一","二","三","四","五","六","七","八","九");
		for($i=0;$i<4;$i++)
			for($k=0;$k<10;$k++)
				if($year[$i]==$k)
					$tmp.=$Name[$k];
					return $tmp;
	}
	public function LMonName($month)
	{
		if($month >=1 && $month <=12 )
		{
			$Name = array( 1=>"正","二","三","四","五","六","七","八","九","十","冬","腊");
			return $Name[$month];
		}
		return $month;
	}
	public function LDayName($day)
	{
		if($day >=1 && $day <=30 )
		{
			$Name = array( 1 =>
					"初一","初二","初三","初四","初五","初六","初七","初八","初九","初十",
					"十一","十二","十三","十四","十五","十六","十七","十八","十九","二十",
					"廿一","廿二","廿三","廿四","廿五","廿六","廿七","廿八","廿九","三十"
			);
			return $Name[$day];
		}
		return $day;
	}
	//公历转农历(Sdate：公历日期)
	public function S2L($date)
	{
		list($year, $month, $day) = explode("-", $date);
		if($year <= 1951 || $month <= 0 || $day <= 0 || $year >= 2051 ) return false;
		//获取查询日期到当年1月1日的天数
		$date1 = strtotime($year."-01-01");//当年1月1日
		$date2 = strtotime($year."-".$month."-".$day);
		$days=round(($date2-$date1)/3600/24);
		$days += 1;
		//获取相应年度农历数据，化成数组Larray
		$Larray = $this->_LMDay[$year - $this->_LStart];
		if($days <= $Larray[0])
		{
			$Lyear = $year - 1;
			$days = $Larray[0] - $days;
			$Larray = $this->_LMDay[$Lyear - $this->_LStart];
			if($days < $Larray[12])
			{
				$Lmonth = 12;
				$Lday = $Larray[12] - $days;
			}
			else
			{
				$Lmonth = 11;
				$days = $days - $Larray[12];
				$Lday = $Larray[11] - $days;
			}
		}
		else
		{
			$Lyear = $year;
			$days = $days - $Larray[0];
			for($i = 1;$i <= 12;$i++)
			{
				if($days > $Larray[$i]) $days = $days - $Larray[$i];
				else
				{
					if ($days > 30){
						$days = $days - $Larray[13];
						$Ltype = 1;
					}
					$Lmonth = $i;
					$Lday = $days;
					break;
				}
			}
		}
		return mktime(0, 0, 0, $Lmonth, $Lday, $Lyear);
		//$Ldate = $Lyear."-".$Lmonth."-".$Lday;
		//$Ldate = $this->LYearName($Lyear)."年".$this->LMonName($Lmonth)."月".$this->LDayName($Lday);
		//if($Ltype) $Ldate.="(闰)";
		//return $Ldate;
	}
	//农历转公历(date：农历日期； type：是否闰月)
	public function L2S($date,$type = 0)
	{
		list($year, $month, $day) = split("-",$date);
		if($year <= 1951 || $month <= 0 || $day <= 0 || $year >= 2051 ) return false;
		$Larray = $this->_LMDay[$year - $this->_LStart];
		if($type == 1 && count($Larray)<=12 ) return false;//要求查询闰，但查无闰月
		//如果查询的农历是闰月并该年度农历数组存在闰月数据就获取
		if($Larray[$month]>30 && $type == 1 && count($Larray) >=13)  $day = $Larray[13] + $day;
		//获取该年农历日期到公历1月1日的天数
		$days = $day;
		for($i=0;$i<=$month-1;$i++)
			$days += $Larray[$i];
			//当查询农历日期距离公历1月1日超过一年时
			if($days > 366 || ($this->GetSMon($month,2)!=29 && $days>365 ))
			{
				$Syear = $year +1;
				if($this->GetSMon($month,2)!=29)
					$days-=366;
					else
						$days-=365;
						if($days > $this->_SMDay[1])
						{
							$Smonth = 2;
							$Sday = $days - $this->_SMDay[1];
						}
						else
						{
							$Smonth = 1;
							$Sday = $days;
						}
			}
			else
			{
				$Syear =$year;
				for($i=1;$i<=12;$i++)
				{
					if($days > $this->GetSMon($Syear,$i))
						$days-=$this->GetSMon($Syear,$i);
						else
						{
							$Smonth = $i;
							$Sday = $days;
							break;
						}
				}
			}
			return mktime(0, 0, 0, $Smonth, $Sday, $Syear);
			//$Sdate = $Syear."-".$Smonth."-".$Sday;
			//return $Sdate;
	}
}
?>